681003619 has 8 divisors (see below), whose sum is σ = 711797760. Its totient is φ = 650308296.

The previous prime is 681003613. The next prime is 681003623. The reversal of 681003619 is 916300186.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 681003619 - 2¹¹ = 681001571 is a prime.

It is a super-2 number, since 2×681003619² = 927531858182194322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (681003613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10429 + ... + 38350.

It is an arithmetic number, because the mean of its divisors is an integer number (88974720).

Almost surely, 2^681003619 is an apocalyptic number.

681003619 is a deficient number, since it is larger than the sum of its proper divisors (30794141).

681003619 is a wasteful number, since it uses less digits than its factorization.

681003619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49409.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 681003619 is about 26096.0460414983. The cubic root of 681003619 is about 879.7983435140.

The spelling of 681003619 in words is "six hundred eighty-one million, three thousand, six hundred nineteen".